Governor for steam-engines



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A. HENDBY.

l GOVERNOR POR STEAM BNG-INES.

No. 439,950. Patented Nov. 4, 1890.

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A. HENDEY. GOVERNOR EOE STEAM ENGINES. No. 439,950. Patented N0v.4, 1890.

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(No Model.) 3 Sheets-Sheet 3. A. HENDEY.

VGOVLRNOR FOR STEAM ENGINES.

No, 439,950. Patented Nov. 4, 1890.

MTESEEE UNITED STATES PATENT OFFICE.

ARTHUR I-IENDEY, OF DENVER, COLORADO.

GOVERNOR FOR STEAM-ENGINES.

SPECIFICATION forming part of Letters Patent No. 439,950, dated November 4, 1890.

Application filed March 1890. Serial No. 342,696. (No model.)

To aZZ whom it may concern.-

Bc it known that I, ARTHUR HENDEY, a citizen o f the United States, residing at Denver, in the county of Arapahoe and State of Colorado, have invented certain new and useful Improvements in Governors for Steam-Engines; and I do hereby declare that the following is a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to that class of governors for steam-engines in which the eccentric or crank which operates the valve is mounted on the crank-shaft of the engine, and in which said eccentric is automatically moved by the centrifugal force of connected weights toward or from the axis of the shaft to vary the throw of the slide-valve and thus regulate the admission of steam to the enginecylinder to correspond with the work required, and thus maintain a uniformity of speed under varying conditions.

The object of the invention is to produce a governor simple in construction and efficient in operation.

The invention involves a novel way of mounting and operating the adjustable valvelnoving eccentric or crank; and it consists, essential1y,in the combination of a supportingfrarne adapted for connection with the driving-shaft of the engine, a bell-crank arm or lever looselypivoted to the supporting-frame, so that the angular part may swing toward and from the axis of the engine-shaft,a crank or eccentric connected with said arm or lever near the angle thereof, a cross head or plate adapted to swing or rock about the axis of the engine-shaft, carrying a crank-pin or eccentric, and a link or strap for connecting the free arm of thebell-crankwith the eccentric of the cross head or plate.

In the drawings, Figure 1 is a side elevation of a form of my invention adapted for use on a center-crank engine, where the cross head or plate may be mounted directly over the end of the shaft. Fig. 2 is an elevation, partly in section, in position at right angles with Fig. 1. Fig. 3 is an elevation of the bell-crank arm or lever. Fig. 4 is an elevation of the cross-head. Fig. 5 is also an elevation of the link for connecting the parts shown in Figs. 3 and 4. Figs. 6 and 7 are side elevation and section, respectively, showing the same invention as applied to a part of the engine-shaft at a distance from either end.

A is a frame of usual construction adapted to be keyed to the engine-shaft.

B is a bell-crank lever pivoted at b to the frame and having a pin b formed thereon, as shown outside the angle formed at the inter section of the two arms of the lever.

C is a cross head or plate loosely mounted on the end of the engine-shaft. This part is provided with a crank-pin or eccentric c, and with lugs or pins c c for the weight-links.

D is a link extending from crank-pi'n c to the extremity of the short arm of lever B, for operatively coupling said parts.

E E are balls or weights iiexibly connected with the cross-head and the frame for moving said cross-head by centrifugal action in a well-known way.

F F are springs of usual construction and function.

In operation when for any reason the speed of the engine increases the Weights swing outward, thereby carrying the cross-head around in the direction of the arrow. The crank-pin c, swinging out of its central position, operates through link D to raise the crank-arm B and the crank b', bringing the latter nearer the axis of the engine-shaft, or reducing the eccentricity of the crank, and consequently the throw of the valve, and thereby regulating the speed of the engine.

In Figs. 6 and 7, the disk C', carrying its eccentric O2, the bell-crank B', having a slot, as shown, 'and carrying an eccentric B2, and the strap D serve the same functions and operate in the same way as the crosshead having crankpin, the bellcrank having crank pin, and the link hereinbefore described.

This combination constitutes an improvement extremely simple in construction and IOO With a crank-pin and iexibly connected with the frame, and a, link for coupling the free end of the bell-crank and the crank-pin of the cross-head, substantially as described. 15

In testimony whereof Iaftix my signature in v the presence ot' two Witnesses.

ARTHUR HENDEY.

Witnesses:

G. L. HUDSON, C. W. BETTS. 

